| Province: | NL |
| Type: | NL |
| Route: | 203 |
| Alternate Name: | Fair Haven Road |
| Maint: | Newfoundland and Labrador Department of Transportation and Infrastructure |
| Length Km: | 13.7 |
| Direction A: | South |
| Terminus A: | Fair Haven |
| Junction: | in Bellevue Beach |
| Direction B: | North |
| Terminus B: | in Bellevue Beach |
| Previous Type: | NL |
| Previous Route: | 202 |
| Next Type: | NL |
| Next Route: | 204 |
Route 203, also known as Fair Haven Road, is a 13.7adj=midNaNadj=mid north–south highway along the Avalon Peninsula on the island of Newfoundland. It connects the community of Fair Haven with Bellevue and the Trans-Canada Highway. There are no other major intersections or communities along its entire length, and as with most highways in Newfoundland and Labrador, it is entirely a two-lane highway.